HiDoes any of you guys tried to use gas strut to build high pressure hand pump?I need at least 130 bar (1900 PSI) but very small volume. So I think of 1 stage pump with small diameter piston.I think of use gas strut because it has perfectly smooth cylinder and matched rod with piston.I look for tips how to disassemble one of this gas springs. I don't see any sign of thread. Is carefully cut only option to release nitrogen and open cylinder?

I drill small hole in gas strut and wait to nitrogen escape.Next i cut with angle grinder top part of cylinder.And when I see how its build inside I realise that I cut the wrong end of cylinder xD In top part of cylinder is linear bearnig and I cut this part :/Piston is useless in pump idea and shaft is shorter than cylinder. In first look gas strut was good material for pump but after examination of parts this is not good idea.I think cheaper and better will be buying precision pipe for cylinder and made resin piston from this topic

There is this example from ookook.I have been wanting to experiment with this, however I pretty much have a limitless and virtually free supply of fridge compressors and the gas strut option was pretty expensive from my initial research. (once shipping was included)